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VizieR

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J/ApJS/209/27/xmystix MYStIX: the Chandra X-ray sources (Kuhn+, 2013)
*MYStIX X-ray sources and properties (11315 rows)
  recno=7815
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ColumnValue  Explain   (UCD)
_RAJ200020 39 00.3713 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000+42 24 36.043 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195020 37 13.4964 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950+42 13 58.367 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon081.7441499 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat+00.5907795 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)
7815recno 7815  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

RegDR21  Name of the MYStIX star-forming region (G1) (list of regions)(linked to observations of the region) (Note)   (obs.field)
CXO203900.37+422436.0  IAU source name (HHMMSS.ss+DDMMSS.s; J2000) (meta.id;meta.main)
Labelp1_552  Source name used within the project (Note 1)   (meta.id;obs)
RAJ2000309.75155 deg (i) Right ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000+42.41001 deg (i) Declination (J2000) (pos.eq.dec;meta.main)
ePos 0.3 arcsec [0/3] 1σ error circle around RA,DE (stat.error)
PosTypeAE correlation  Algorithm used to estimate position (Note 2)   (meta.id;stat.fit)
no-m 0.00   [0/0.01] merged p-value for no-source hypothesis (smallest of no-t/no-s/no-h) (Note 3)   (stat.fit.goodness)
no-t 0.00   [0/0.5] p-value for 0.5-8keV no-source hypothesis (Note 3)   (stat.fit.goodness)
no-s    [0/1] p-value for 0.5-2keV no-source hypothesis (Note 3)   (stat.fit.goodness)
no-h 0.00   [0/1] p-value for no-source hypothesis in the hard (2-8keV) band (Note 3)   (stat.fit.goodness)
KS-s 0.20   [0/1] Smallest p-value under the no-variability null hypothesis within a single-observation (Note 4)   (stat.fit.goodness)
KS-m 0.01   [0/1] Smallest p-value under the no-variability null hypothesis over merged observations (Note 4)   (stat.fit.goodness)
ExpNom 97320.50 s [11844/440602] Total exposure time in merged observations (time.duration;obs)
ExpFrac 0.97   [0/1] Fraction of ExpN that source was observed (Note 5)   (time.expo)
Nobs4   [1/5] Total number of observations extracted (meta.number)
Nph4   [1/5] Number of observations merged to estimate photometry properties (meta.number)
Fdis 0.00   [0/0.9] Fraction of exposure discarded in merge (time.expo)
theta-m 5.97 arcmin [0.07/12.2] Smallest value of θ (instr.offset)
theta 5.98 arcmin [0.07/12.2] Average off-axis angle θ for merged observations (instr.offset)
theta-M 5.99 arcmin [0.07/12.5] Largest value of θ (instr.offset)
PSFf 0.62   [0.3/1] Average PSF fraction at 1.5 keV for merged observations (instr.det.psf)
Area 50.60   [1/2179] Average aperture area for merged observations in (0.492arcsec)2 units (phys.area;instr)
aglow 0.00   [0/0.4] Suspected afterglow fraction (Note 6)   (stat.fit.param)
Oct-t 30 ct [2/34654] Observed 0.5-8keV counts in merged apertures (phot.count;em.X-ray)
Oct-s 1 ct [0/31233] Observed 0.5-2keV counts in merged apertures (phot.count;em.X-ray)
Oct-h 29 ct [0/5668] Observed 2-8keV counts in merged apertures (phot.count;em.X-ray)
bgScl 42.21   [0.5/10864] Scaling of background extraction (instr.background)
bgct-t 128 ct [0/15263] Observed 0.5-8keV counts in merged background regions (instr.background)
bgct-s 21 ct [0/14105] Observed 0.5-2keV counts in merged background regions (instr.background)
bgct-h 107 ct [0/1527] Observed 2-8keV counts in merged background regions (instr.background)
Nct-t 27.0 ct [0.8/34588] Net 0.5-8keV counts in merged apertures (phot.count;em.X-ray)
Nct-s 0.5 ct [-7.1/31173] Net 0.5-2keV counts in merged apertures (phot.count;em.X-ray)
Nct-h 26.5 ct [-11/5667] Net 2-8keV counts in merged apertures (phot.count;em.X-ray)
b_Nct-t 21.8 ct [0/34402] 1σ lower bound on NCtst (Note 7)   (phot.count;em.X-ray;stat.min)
B_Nct-t 32.8 ct [2/34776] 1σ upper bound on NCtst (Note 7)   (phot.count;em.X-ray;stat.max)
b_Nct-s 0.0 ct [0/30997] 1σ lower bound on NCtss (Note 7)   (phot.count;em.X-ray;stat.min)
B_Nct-s 2.0 ct [0/31352] 1σ upper bound on NCtss (Note 7)   (phot.count;em.X-ray;stat.max)
b_Nct-h 21.3 ct [0/5592] 1σ lower bound on NCtsh (Note 7)   (phot.count;em.X-ray;stat.min)
B_Nct-h 32.2 ct [0/5743] 1σ upper bound on NCtsh (Note 7)   (phot.count;em.X-ray;stat.max)
Area-t145.46   [19/247] Mean effective area (ARF value) in cm2.count/photon in 0.5-8keV (Note 8)   (phys.area;instr)
Area-s212.37   [29/360] Mean effective area (ARF value) in cm2.count/photon in 0.5-2keV (Note 8)   (phys.area;instr)
Area-h128.69   [17.3/219] Mean effective area (ARF value) in cm2.count/photon in 2-8keV (Note 8)   (phys.area;instr)
E-t 4.77 keV [0.5/7.5] Median 0.5-8keV energy, observed spectrum (Note 9)   (em.energy)
E-s 1.80 keV [0/2] Median 0.5-2keV energy, observed spectrum (Note 9)   (em.energy)
E-h 4.77 keV [0/8] Median 2-8keV energy, observed spectrum (Note 9)   (em.energy)
XFlx-t -5.720 [ph/cm2/s] [-7.8/-3.1] log incident photon flux in total (0.5-8keV) band (Note 10)   (phot.flux;em.X-ray)
XFlx-s -7.615 [ph/cm2/s] [-11.7/0] log incident photon flux in soft (0.5-2keV) band (Note 10)   (phot.flux;em.X-ray)
XFlx-h -5.675 [ph/cm2/s] [-10.5/0] log incident photon flux in hard (2-8keV) band (Note 10)   (phot.flux;em.X-ray)
Flux-h 1.81e-14 mW/m2 [0/2.5e-12] 2-8 keV X-ray flux (Note 11)   (phot.flux;em.X-ray)
Flxc-h 6.60070e-14 mW/m2 [0/4.7e-12] Absorption-corrected 2-8 keV X-ray flux (phot.flux;em.X-ray)
e_Flxc-h 3.72301e-14 mW/m2 [0/3.6e-13] 1σ statistical uncertainty on Flxc-h (stat.error)
s_Flxc-h 3.90996e-14 mW/m2 [0/4.3e-13] 1σ systematic uncertainty on Flxc-h (stat.error.sys)
Flux-t 1.85e-14 mW/m2 [0/2.6e-12] 0.5-8 keV X-ray flux (phot.flux;em.X-ray)
Flxc-t 1.58022e-13 mW/m2 [0/1.1e-11] Absorption-corrected 0.5-8 kev X-ray flux (phot.flux;em.X-ray)
e_Flxc-t 8.91344e-14 mW/m2 [0/8.7e-13] 1σ statistical uncertainty on Flxc-t (stat.error)
s_Flxc-t 1.37349e-13 mW/m2 [0/1.9e-12] 1σ systematic uncertainty on Flxc-t (stat.error.sys)
logNH23.30 cm-2 [0/24] Gas column density (phys.columnDensity)
e_logNH 0.21 cm-2 [0/1.1] 1σ statistical uncertainty on logNH (stat.error)
s_logNH 0.18 cm-2 [0/1.2] 1σ systematic uncertainty on logNH (stat.error.sys)
  
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